/*
 * Copyright 2023 Confluent Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.confluent.kafka.schemaregistry.testutil;

import java.time.Clock;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.temporal.TemporalUnit;

public class FakeClock extends Clock {

  private Instant instant;

  public FakeClock advance(long time, TemporalUnit unit) {
    this.instant = instant().plus(time, unit);
    return this;
  }

  @Override
  public Instant instant() {
    return instant != null ? instant : Instant.now();
  }

  @Override
  public ZoneId getZone() {
    return ZoneOffset.UTC;
  }

  @Override
  public Clock withZone(ZoneId zoneId) {
    throw new UnsupportedOperationException();
  }
}
